what is the probability that at least one of them narrates an incident truthfully.
A bag contains 20 white and some black balls. If the probability of drawing a black ball from the bag is 6.25 times that of drawing a white ball, find t...
Tickets numbered 1 to 50 are mixed up and then a ticket drawn at random. What is the probability that the ticket drawn bears a number which is multipl...
A coin is tossed 9 times. Find the probability of almost 2 tails.
A bag contains 8 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
...In a box, there are three different colour cubes: blue, green, and orange. The sum of the number of green and blue cubes in the box equals the number of...
A card is drawn randomly from a collection of total face cards. What is the probability that the drawn card is a jack?
A box contains 5 blue jellies, some red jelly and rest yellow jelly. The probability of picking a red ball at random is 3/10, while the probability of p...
A box contains 5 blue jellies, some red jelly and rest yellow jelly. The probability of picking a red ball at random is 3/10, while the probability of p...
A bag contains 20 white and some black balls. If the probability of drawing a black ball from the bag is 2.5 times that of drawing a white ball, find th...
